Exhibit 5.1

| Youxin Technology Ltd | D +852 3656 6054 | |
| E nathan.powell@ogier.com | ||
| Reference: NMP/CLE/504131.00003 | ||
| 11 May 2026 |
Dear Sirs
Youxin Technology Ltd (the Company)
We have acted as Cayman Islands counsel to the Company in connection with the Company’s registration statement on Form F-3, including all amendments and supplements thereto (the Registration Statement), as filed with the U.S. Securities and Exchange Commission (the Commission) under the United States Securities Act of 1933, as amended to date (the Act). The Registration Statement relates to the offering, issuance and sale from time to time, in one or more offerings, of up to US$100,000,000 of the following securities of the Company (the Securities):
| (i) | class A ordinary shares of a par value of US$0.008 each of the Company (the Class A Shares); |
| (ii) | warrants to purchase the Class A Shares (the Warrants) issuable pursuant to the terms of a warrant agreement and a warrant certificate (together, the Warrants Documents); |
| (iii) | rights to purchase the Class A Shares (the Rights) issuable pursuant to the terms of a rights agent agreement and a right certificate (together, the Rights Documents); |
| (iv) | units composed of any combination of the securities described above (the Units) issuable pursuant to the terms of a unit agreement and a unit certificate (together, the Units Documents); |
| (v) | share purchase contracts to purchase the Class A Shares or other Securities (the Share Purchase Contracts) pursuant to the terms of a share purchase contract; and |
| (vi) | share purchase units (Share Purchase Units) composed of a Share Purchase Contract and Warrants and other Securities or debt obligations of third parties pursuant to the terms of the Share Purchase Unit (the Share Purchase Units together with the Share Purchase Contracts and any unit agreements, and any unit certificates, collectively, the Share Purchase Agreements). |
Ogier Providing advice on British Virgin Islands, Cayman Islands and Guernsey laws
Floor 11 Central Tower 28 Queen’s Road Central Central Hong Kong
T +852 3656 6000 F +852 3656 6001 ogier.com |
Partners Nicholas Plowman Nathan Powell Anthony Oakes Oliver Payne Kate Hodson David Nelson Justin Davis Joanne Collett Dennis Li Cecilia Li |
Yuki Yan David Lin Alan Wong Janice Chu Zhao Rong Ooi Rachel Huang** Florence Chan*‡ Richard Bennett**‡ James Bergstrom‡ |
* admitted in New Zealand ** admitted in England and Wales ‡ not ordinarily resident in Hong Kong |
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We are furnishing this opinion as Exhibits 5.1 and 23.2 to the Registration Statement.
| 1 | Documents examined |
For the purposes of giving this opinion, we have examined originals, copies, or drafts of the documents set forth in Schedule 1 (the Documents). In addition, we have examined the corporate and other documents and conducted the searches listed in Schedule 1. We have not made any searches or enquiries concerning, and have not examined any documents entered into by or affecting the Company, or any other person, save for the searches, enquiries and examinations expressly referred to in Schedule 1.
| 2 | Assumptions |
In giving this opinion we have relied upon the assumptions set forth in this paragraph 2 without having carried out any independent investigation or verification in respect of those assumptions:
| (a) | all original documents examined by us are authentic and complete; |
| (b) | all copies of documents examined by us (whether in facsimile, electronic or other form) conform to the originals and those originals are authentic and complete; |
| (c) | all signatures, seals, dates, stamps and markings (whether on original or copy documents) are genuine; |
| (d) | each of the Good Standing Certificate, the Register and the Director’s Certificate (each as defined in Schedule 1) is accurate and complete as at the date of this opinion; |
| (e) | the CORIS Search (as defined in Schedule 1) which we have examined is accurate and that the information disclosed by the CORIS Search is true and complete and that such information has not since been altered; |
| (f) | all copies of the Registration Statement are true and correct copies and the Registration Statement conforms in every material respect to the latest drafts of the same produced to us and, where the Registration Statement has been provided to us in successive drafts marked-up to indicate changes to such documents, all such changes have been so indicated; |
| (g) | the Board Resolutions (as defined in Schedule 1) remain in full force and effect and each of the directors of the Company has acted in good faith with a view to the best interests of the Company and has exercised the standard of care, diligence and skill that is required of him or her in approving the Registration Statement, the Indenture, the Warrants Documents, the Rights Documents, the Units Documents and similar agreements or instruments in respect of the issuance of the Securities and no director has a financial interest in or other relationship to a party of the transactions contemplated by such documents which has not been properly disclosed in the Board Resolutions; |
| (h) | each of the parties to the Warrants Documents, the Rights Documents, the Units Documents, the Share Purchase Agreements and similar agreements or instruments in respect of the issuance of the Securities (together, the Securities Documents) other than the Company is duly incorporated, formed or organised (as applicable), validly existing and in good standing under all relevant laws; |
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| (i) | each of the Securities Documents will be authorised and duly executed and unconditionally delivered by or on behalf of all parties to it in accordance with all applicable laws (other than, in the case of the Company, the laws of the Cayman Islands); |
| (j) | each of the Securities Documents will be legal, valid and binding and enforceable against all relevant parties in accordance with its terms under relevant law (other than, in the case of the Company, the laws of the Cayman Islands); |
| (k) | none of the opinions expressed herein will be adversely affected by the laws or public policies of any jurisdiction other than the Cayman Islands. In particular, but without limitation to the previous sentence: |
| (i) | the laws or public policies of any jurisdiction other than the Cayman Islands will not adversely affect the capacity or authority of the Company; and |
| (ii) | neither the execution or delivery of the Securities Documents nor the exercise by any party to the Securities Documents of its rights or the performance of its obligations under them contravene those laws or public policies; |
| (l) | there are no agreements, documents or arrangements (other than the documents expressly referred to in this opinion as having been examined by us) that materially affect or modify the Registration Statement, the Securities Documents or the transactions contemplated by them or restrict the powers and authority of the Company in any way; |
| (m) | no monies paid to or for the account of any party under the Registration Statement or the Securities Documents represent or will represent criminal property or terrorist property (as defined in the Proceeds of Crime Act (as revised) and the Terrorism Act (as revised), respectively); |
| (n) | the issue of any Class A Shares pursuant to the Registration Statement and the Securities Documents, the issue of the Class A Shares upon the exercise of the Warrants and the issue of the Class A Shares upon the exercise of the Rights, whether as principal issue or on the conversion, exchange or exercise of any Class A Shares, Warrants or Rights, and the issue of the Class A Shares pursuant to any of the Share Purchase Agreements would not result in the Company exceeding its authorised share capital; and upon the issue of any Class A Shares, the Company will receive consideration for the full issue price thereof which shall be equal to at least the par value thereof and that such issuance will be duly registered, and will continue to be registered, in the Company’s register of members; |
| (o) | there are no circumstances or matters of fact existing which may properly form the basis for an application for an order for rectification of the register of members of the Company; |
| (p) | the certificates for the Class A Shares will conform to the specimen as set out thereof and upon issuance will have been duly countersigned by the transfer agent and duly registered by the registrar for the Class A Shares, or, if uncertificated, valid book-entry notations for the issuance of the Class A Shares in uncertificated form will have been duly made in the share register of the Company; |
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| (q) | no invitation has been or will be made by or on behalf of the Company to the public in the Cayman Islands to subscribe for any of the Securities; |
| (r) | at the time of the issuance of any Class A Shares in accordance with its terms: |
| (i) | the Company will not have been struck off or placed in liquidation; and |
| (ii) | the issue price for each Class A Share to be issued will not be less than the par value of such share; |
| (s) | neither the directors nor the shareholders of the Company have taken any steps to appoint a liquidator of the Company and no receiver or restructuring officer has been appointed over any of the Company’s property or assets; and |
| (t) | there is no provision of the law of any jurisdiction, other than the Cayman Islands, which would have any implication in relation to the opinions expressed herein. |
| 3 | Opinions |
On the basis of the examinations and assumptions referred to above and subject to the qualifications set forth in Schedule 2 and the limitations set forth below, we are of the opinion that:
Corporate status
| (a) | The Company has been duly incorporated as an exempted company with limited liability and is validly existing and in good standing with the Registrar of Companies of the Cayman Islands (the Registrar). |
Authorised share capital
| (b) | The authorised share capital of the Company is US$1,640,000 divided into: (i) 204,750,000 class A ordinary shares of par value of US$0.008 each, and (ii) 20,000,000 class B ordinary shares of par value of US$0.0001 each. |
Valid Issuance of the Class A Shares and the Securities
| (c) | Upon the Class A Shares to be offered and issued by the Company as contemplated by the Registration Statement (including the issuance of the Class A Shares upon the exercise of the Warrants in accordance with the Warrants Documents and the issuance of the Class A Shares upon the exercise of the Rights in accordance with the Rights Documents and the issuance of the Class A Shares in accordance with the Share Purchase Agreements) having been duly authorised by the Company and, when issued by the Company upon: |
| (i) | either (A) the provisions of the memorandum and articles of association of the Company then in effect and the applicable definitive purchase, underwriting or similar agreement approved by the board of directors of the Company (the Board) have been satisfied and payment of the consideration specified therein (being not less than the par value of the Class A Shares) has been made, or (B) if such Class A Shares are issuable upon conversion, exchange, redemption, repurchase or exercise of any other security, the terms of such security, the memorandum and articles of association of the Company then in effect or the instrument governing such security providing for such conversion, exchange, redemption, repurchase or exercise for Class A Shares, as approved by the Board, have been satisfied and the consideration approved by the Board (being not less than the par value of the Class A Shares) received; and |
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| (ii) | valid entry has been made in the register of members of the Company reflecting such issuance of Class A Shares, in each case in accordance with the memorandum and articles of association of the Company then in effect, |
shall be validly issued, fully paid and non-assessable.
| (d) | Upon the terms of the Warrants and the Warrants Documents having been duly authorised by the Company and, when the Warrants Documents having been duly executed, dated and delivered by the Company and the parties thereto in accordance with the Warrants Documents, the Registration Statement and any prospectus supplement relating thereto, and upon payment in full of the consideration therefor, the Warrants will constitute legal, valid and binding obligations of the Company. |
| (e) | Upon the terms of the Rights and the Rights Documents having been duly authorised by the Company and, when the Rights Documents having been duly executed, dated and delivered by the Company and the parties thereto in accordance with the Rights Documents, the Registration Statement and any prospectus supplement relating thereto, and upon payment in full of the consideration therefor, the Rights will constitute legal, valid and binding obligations of the Company. |
| (f) | Upon the terms of the Units and the Units Documents having been duly authorised by the Company and, when the Units Documents having been duly executed, dated and delivered by the Company and the parties thereto in accordance with the Units Documents, the Registration Statement and any prospectus supplement relating thereto, and upon payment in full of the consideration therefor, the Units will constitute legal, valid and binding obligations of the Company. |
| (g) | Upon the terms of the Share Purchase Contracts and the Share Purchase Units and the Share Purchase Agreements having been duly authorised by the Company and, when the Units Agreements having been duly executed, dated and delivered by the Company and the parties thereto in accordance with the Share Purchase Agreements Documents, the Registration Statement and any prospectus supplement relating thereto, and upon payment in full of the consideration therefor, the Share Purchase Contracts and the Share Purchase Units will constitute legal, valid and binding obligations of the Company. |
| 4 | Matters not covered |
| 4.1 | We offer no opinion: |
| (a) | as to any laws other than the laws of the Cayman Islands, and we have not, for the purposes of this opinion, made any investigation of the laws of any other jurisdiction, and we express no opinion as to the meaning, validity, or effect of references in the Registration Statement and the Securities Documents to statutes, rules, regulations, codes or judicial authority of any jurisdiction other than the Cayman Islands; |
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| (b) | except to the extent that this opinion expressly provides otherwise, as to the commercial terms of, or the validity, enforceability or effect of the Registration Statement and the Securities Documents (or as to how the commercial terms of such documents reflect the intentions of the parties), the accuracy of representations, the fulfilment of warranties or conditions, the occurrence of events of default or terminating events or the existence of any conflicts or inconsistencies among the Registration Statement and the Securities Documents and any other agreements into which the Company may have entered or any other documents; or |
| (c) | as to whether the acceptance, execution or performance of the Company’s obligations under the documents reviewed by us will result in the breach of or infringe any other agreement, deed or document (other than the Memorandum and Articles) entered into by or binding on the Company. |
| 5 | Governing law of this opinion |
| 5.1 | This opinion is: |
| (a) | governed by, and shall be construed in accordance with, the laws of the Cayman Islands; |
| (b) | limited to the matters expressly stated in it; and |
| (c) | confined to, and given on the basis of, the laws and practice in the Cayman Islands at the date of this opinion. |
| 5.2 | Unless otherwise indicated, a reference to any specific Cayman Islands legislation is a reference to that legislation as amended to, and as in force at, the date of this opinion. |
| 6 | Who can rely on this opinion |
| 6.1 | We hereby consent to the filing of this opinion as an exhibit to the Registration Statement. We also consent to the reference to this firm in the Registration Statement under the heading “Legal Matters”. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission promulgated thereunder. |
| 6.2 | This opinion may be used only in connection with the issue of the Class A Shares by the Company while the Registration Statement is effective. With the exception of your professional advisers (acting only in that capacity), it may not be relied upon by any person, other than persons entitled to rely upon it pursuant to the provisions of the Act, without our prior written consent. |
Yours faithfully
/s/ Oiger
Ogier
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SCHEDULE 1
The Documents
| 1 | The certificate of incorporation of the Company dated 21 October 2022 issued by the Registrar. |
| 2 | The fifth amended and restated memorandum and articles of association of the Company adopted by special resolution passed on 9 December 2025 (together, the Memorandum and the Articles). |
| 3 | A certificate of good standing dated 9 January 2026 (the Good Standing Certificate) issued by the Registrar in respect of the Company. |
| 4 | A copy of the register of directors and officers of the Company dated 23 December 2024 (the Register). |
| 5 | A certificate from a director of the Company dated the same date of this opinion as to certain matters of facts (the Director’s Certificate). |
| 6 | A copy of the written resolutions of the board of directors of the Company dated 13 January 2026 approving, among other things, the Company’s filing of the Registration Statement and the issuance of the Securities (the Board Resolutions). |
| 7 | The Registration Statement. |
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SCHEDULE 2
Qualifications
Good standing
| 1 | Under the Companies Act (Revised) (Companies Act) of the Cayman Islands, annual returns in respect of the Company must be filed with the Registrar, together with payment of annual filing fees. A failure to file annual returns and pay annual filing fees may result in the Company being struck off the Register of Companies, following which its assets will vest in the Financial Secretary of the Cayman Islands and will be subject to disposition or retention for the benefit of the public of the Cayman Islands. |
| 2 | In good standing means only that as of the date of the Good Standing Certificate the Company is up-to-date with the filing of its annual returns and payment of annual fees with the Registrar. We have made no enquiries into the Company’s good standing with respect to any filings or payment of fees, or both, that it may be required to make under the laws of the Cayman Islands other than the Companies Act. |
Register of members
| 3 | Under the Companies Act, the register of members of a Cayman Islands company is by statute regarded as prima facie evidence of any matters which the Companies Act directs or authorises to be inserted therein. A third party interest in the shares in question would not appear. An entry in the register of members may yield to a court order for rectification (for example, in the event of fraud or manifest error). |
Non-assessable
| 4 | In this opinion, the phrase “non-assessable” means, with respect to the Sale Shares, that a shareholder shall not, solely by virtue of its status as a shareholder, be liable for additional assessments or calls on the Sale Shares by the Company or its creditors (except in exceptional circumstances, such as involving fraud, the establishment of an agency relationship or an illegal or improper purpose or other circumstance in which a court may be prepared to pierce or lift the corporate veil). |
| 5 | We are not aware of any Cayman Islands authority as to when the courts would set aside the limited liability of a shareholder in a Cayman Islands company. Our opinion on the subject is based on the Companies Act and English common law authorities, the latter of which are persuasive but not binding in the courts of the Cayman Islands. Under English authorities, circumstances in which a court would attribute personal liability to a shareholder are very limited, and include: (a) such shareholder expressly assuming direct liability (such as a guarantee); (b) the company acting as the agent of such shareholder; (c) the company being incorporated by or at the behest of such shareholder for the purpose of committing or furthering such shareholder’s fraud, or for a sham transaction otherwise carried out by such shareholder. In the absence of these circumstances, we are of the opinion that a Cayman Islands’ court would have no grounds to set aside the limited liability of a shareholder. |